Automatic Supply Order

[traktap]

In our store we do not keep any inventory. 

 

We only order based on what customers order. So all my product Quantity stock is 0 at this moment. 

 

When our customer orders an item, the stock becomes negative. 

 

Suppose the customer order with 11 items of  product A and 1 item of product B

 

When we create a supply order for that item, if we enter 0 in Automatically Load Products box, then the prestashop picks all items with 0 quantity.

 

However we need only Those Items which are Ordered by the Customers ( i.e. the products with -ve stock)  in this case A          -11nos and B    -1nos

 

and It should order A 11nos  and B 1 nos

 

How to do this. 

 

 

can anyone guide 

 

Thanks